Precast internal formwork offset correction structure for single-box double-room bridge girders

Abstract

The invention discloses a precast internal formwork offset correction structure for single-box double-room bridge girders, which can constrain the offset of the center of gravity of an internal formwork. End crossbeams are respectively fixedly connected with both ends of an upper longitudinal beam, and are respectively provided with a pair of vertical slide holes which are respectively located on the left and the right of the longitudinal beam, the pair of vertical slide holes are slidably connected with a pair of uprights, the pair of uprights are rigidly connected with each other to form a spanning sliding sleeve, extended crossbeams which are extended along the transverse direction of a girder are arranged on the bottoms of the uprights, a pair of lift cylinders are vertically arranged outside the vertical slide holes, one end of each lift cylinder is connected with the end crossbeam, the other end of each lift cylinder is connected with the spanning sliding sleeve through the extended crossbeam, the uprights of the spanning sliding sleeve cannot be separated from the vertical slide holes, and moreover, the specifications and intervals of reinforcing plates distributed on an inner formwork and an outer formwork of the internal formwork are different. The precast internal formwork offset correction structure for single-box double-room bridge girders solves the technical problem of the offset of the internal formwork, has the advantages of low cost, reliability and high automation degree, and is safe to construct and convenient to operate.

Description

technical field [0001] The invention relates to the field of single-box double-chamber bridge prefabrication, in particular to a single-box double-chamber bridge prefabricated internal mold deviation correction structure. Background technique [0002] In recent years, in order to shorten the distance between cities, the country has vigorously built intercity high-speed railways. The beam type of this high-speed railway is a single-box double-chamber beam. Its molding technology is mainly developed on the basis of single-box single-chamber bridge concrete prefabrication inner and outer mold molding technology. At this stage, the prefabricated inner mold of the high-speed railway single-box double-chamber bridge adopts the overall structure of the automatic hydraulic upper longitudinal beam. As a whole, the inner mold includes the upper longitudinal beam and the inner mold formwork. Both ends of the upper longitudinal beam are fixedly connected with end beams, and the left an...

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the deficiency that the existing internal mold is prone to deflection, the technical problem to be solved by the present invention is to provide a single-box double-chamber bridge prefabricated internal mold deflection correction structure that can restrain the center of gravity of the internal mold

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